[aprssig] Mobile Digi

[Scott Miller]

To support FD and such, all Tracker2's are configured by default to 
support TEMPn-N, which avoids any extra collisions during normal operation.

Scott
N1VG

William McKeehan wrote:
> According to aprs.org/newN/WIDE1-1settings.txt:
> "We do NOT want mobiles routinely doing WNDEn-N, but we DO want them available
> to support special FD and other special events."